[issue29965] MatchObject __getitem__() should support slicing and len

[Michael Selik]

Michael Selik added the comment:

This would also enable negative indexing, which currently raises "IndexError: no such group".

Edit: I meant whole numbers, not natural numbers.

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versions: +Python 3.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29965>
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